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Question
A particle is in simple harmonic motion along the xaxis. The amplitude of the motion is xm. At one point in its motion its kinetic energy is K= 5J and its potential energy (measured with U= 0 at x= 0) is U= 3J. When it is at x= xm, the kinetic and potential energies are:
A) K= 5J and U= 3J
B) K= 5J and U= -3J
C) K= 8J and U= 0 J
D) K= 0 J and U= 8J
E) K= 0 J and U= -8J
Answer
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